CN116939754A - Cell reselection method and device, computer readable storage medium and terminal equipment - Google Patents

Abstract

The application provides a cell reselection method and device, a computer readable storage medium and terminal equipment, wherein the cell reselection method comprises the following steps: obtaining a frequency priority list, wherein the frequency priority list comprises at least one first frequency of support target slices arranged according to priority; when the highest-level cell in all the first frequencies does not support the target slice, selecting the highest-level cell meeting the signal threshold value from the at least one first frequency as the target cell; cell reselection to the target cell is performed. The technical scheme of the application can timely finish cell reselection.

Description

Cell reselection method and device, computer readable storage medium and terminal equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a cell reselection method and apparatus, a computer readable storage medium, and a terminal device.

Background

When the terminal equipment performs slice specific cell reselection, according to the existing slice specific cell reselection rule, when the highest-level cell on the frequency supporting slicing does not support the target slice, the cell reselection failure of the terminal equipment may be caused, and the time for the terminal equipment to finally select and camp on a suitable cell is increased.

Disclosure of Invention

The application provides a cell reselection method and device, and provides a cell reselection scheme which can timely finish cell reselection.

In order to achieve the above purpose, the present application provides the following technical solutions:

in a first aspect, a cell reselection method is provided, where the cell reselection method includes: obtaining a frequency priority list, wherein the frequency priority list comprises at least one first frequency of support target slices arranged according to priority; when the highest-level cell in all the first frequencies does not support the target slice, selecting the highest-level cell meeting the signal threshold value from the at least one first frequency as the target cell; cell reselection to the target cell is performed.

Optionally, the frequency priority list further includes at least one second frequency that does not support slicing, and selecting a highest-ranking cell that satisfies a signal threshold from the at least one first frequency includes: and selecting the highest-level cell meeting the signal threshold value from the at least one first frequency when the highest-level cell does not support the target slice in all the first frequencies and the highest-level cell in all the second frequencies does not meet the signal threshold value.

Optionally, the selecting the highest-ranking cell that meets the signal threshold in the at least one first frequency includes: selecting a highest ranking cell satisfying a signal threshold among the at least one first frequency according to a frequency priority selected from one of a slice-specific frequency priority and a legacy frequency priority.

Optionally, the slice-specific frequency priority is recorded in the frequency priority list, and the legacy frequency priority is from a system message or signaling to release RRC.

Optionally, the at least one first frequency has a slice-specific frequency priority, and selecting the highest ranking cell that meets the signal threshold in the at least one first frequency includes: sorting the at least one first frequency according to the slice specific frequency priority, wherein the sorted at least one first frequency has a first order; judging whether the highest-level cells in each first frequency meet the signal threshold value or not one by one according to a first sequence, and selecting the cells meeting the signal threshold value as the target cells.

Optionally, the at least one first frequency has a conventional frequency priority, and selecting the highest ranking cell that meets the signal threshold in the at least one first frequency includes: sorting the at least one first frequency according to a conventional frequency priority, the sorted at least one first frequency having a second order; judging whether the highest-level cells in each first frequency meet the signal threshold value or not one by one according to a second sequence, and selecting the cells meeting the signal threshold value as the target cells.

Optionally, the ranking the at least one first frequency according to the legacy frequency priority includes: for a first frequency without traditional frequency priority, assigning the first frequency without traditional frequency priority with the lowest traditional frequency priority; the at least one first frequency is ordered in a conventional frequency priority order from high to low.

Optionally, the ranking the at least one first frequency according to the legacy frequency priority includes: assigning a legacy frequency priority to a first frequency that does not have a legacy frequency priority, the assigned legacy frequency priority being lower than legacy frequency priorities of other first frequencies; the at least one first frequency is ordered in a conventional frequency priority order from high to low.

Optionally, the selecting the highest-ranking cell that meets the signal threshold in the at least one first frequency includes: sorting the at least one first frequency according to the number of supported slices or the priority of the supported slices, wherein the sorted at least one first frequency has a third order; and judging whether the highest-level cells in each first frequency meet the signal threshold value one by one according to a third sequence, and selecting the cells meeting the signal threshold value as the target cells.

In a second aspect, the present application provides a cell reselection apparatus, including: an acquisition module for acquiring a frequency priority list comprising at least one first frequency of support target slices arranged by priority; the target cell selection module is used for selecting the highest-level cell meeting the signal threshold value from at least one first frequency as a target cell at least when the highest-level cell does not support the target slice in all the first frequencies; and the reselection module is used for performing cell reselection to the target cell.

In a third aspect, the present application provides a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of the cell reselection method.

In a fourth aspect, the present application provides a terminal device comprising a memory and a processor, the memory having stored thereon a computer program executable on the processor, the processor executing the steps of the cell reselection method when the computer program is executed.

In a fifth aspect, there is provided a communications apparatus comprising a memory and a processor, the memory having stored thereon a computer program executable on the processor, characterised in that the processor is operative to execute the computer program to perform any one of the methods provided in the first aspect.

In a sixth aspect, there is provided a computer program product having a computer program stored thereon, the computer program being executable by a processor to perform any of the methods provided in the first aspect.

In a seventh aspect, a communication system is provided, including the above terminal device and the above network device.

Compared with the prior art, the technical scheme of the embodiment of the application has the following beneficial effects:

in the technical scheme of the application, when the terminal equipment performs cell reselection according to the frequency priority list, if the highest-level cell in all the first frequencies supporting the target slice does not support the target slice, the terminal equipment selects the highest-level cell meeting the signal threshold value in at least one first frequency as the target cell and performs cell reselection to the target cell. The technical scheme of the application provides a selection scheme for cell reselection, namely, the highest-grade cell meeting the signal threshold is selected from the frequencies supporting slicing, and the cell reselection failure of the terminal equipment can be avoided by executing the traditional cell reselection on the frequencies, so that the time for the terminal equipment to finally select and camp on a proper cell is shortened, and the communication experience of a user is improved.

Further, the terminal device selects the highest ranking cell satisfying the signal threshold from the at least one first frequency according to the slice specific frequency priority or the legacy frequency priority. According to the technical scheme, the target cell is selected according to the specific frequency priority or the traditional frequency priority of the slice, so that the signal threshold and the frequency priority of the target cell can be considered, and the communication quality of the terminal equipment after cell reselection can be ensured.

Drawings

Fig. 1 is a flowchart of a cell reselection method provided in an embodiment of the present application;

fig. 2 is an interaction flow chart of a cell reselection method provided in an embodiment of the present application;

fig. 3 is a schematic structural diagram of a cell reselection device according to an embodiment of the present application;

fig. 4 is a schematic hardware structure of a communication device according to an embodiment of the present application.

Detailed Description

Communication systems to which embodiments of the present application are applicable include, but are not limited to, long term evolution (long term evolution, LTE) systems, fifth generation (5G) systems, NR systems, and future evolution systems or multiple communication convergence systems. The 5G system may be a non-independent Networking (NSA) 5G system or an independent networking (SA) 5G system. The technical scheme of the application is also suitable for different network architectures, including but not limited to a relay network architecture, a dual link architecture, a Vehicle-to-evaluation architecture and the like.

The present application relates generally to communication between a terminal device and a network device. Wherein:

the network device in the embodiment of the present application may also be referred to as an access network device, for example, may be a Base Station (BS) (also referred to as a base station device), where the network device is a device deployed in a radio access network (Radio Access Network, RAN) to provide a wireless communication function. For example, the device for providing base station functionality in the second generation (2 nd-generation, 2G) network comprises a base radio transceiver station (base transceiver station, BTS), the device for providing base station functionality in the third generation (3 rd-generation, 3G) network comprises a node B (NodeB), the device for providing base station functionality in the fourth generation (4 th-generation, 4G) network comprises an evolved node B (eNB), the device for providing base station functionality in the wireless local area network (wireless local area networks, WLAN) is an Access Point (AP), the next generation base station node (next generation node base station, gNB) in the NR is an Access Point (AP), and the node B (ng-eNB) continues to evolve, wherein the communication between the gNB and the terminal device is performed using NR technology, and the communication between the ng-eNB and the terminal device is performed using evolved universal terrestrial radio access (Evolved Universal Terrestrial Radio Access, E-UTRA) technology, both the gNB and the ng-eNB may be connected to the 5G core network. The network device in the embodiment of the present application further includes a device for providing a base station function in a new communication system in the future, and the like.

The terminal device (terminal equipment) in embodiments of the present application may refer to various forms of access terminals, subscriber units, subscriber stations, mobile Stations (MSs), remote stations, remote terminals, mobile devices, user terminals, wireless communication devices, user agents, or user equipment. The terminal device may also be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc., as embodiments of the present application are not limited in this regard. The terminal device may also be referred to as a User Equipment (ue), a terminal, etc.

When the terminal device performs slice specific cell reselection, a suitable cell is selected according to the frequency priority list. According to the setting rule of the current frequency priority list, the frequency priority of the frequency supporting the slice is higher than the frequency priority of the frequency not supporting the slice. The terminal equipment detects whether a highest-level cell supports a target slice on the frequency of the highest frequency priority of the supported slice, and reselects to the cell if the highest-level cell supports the target slice; otherwise, the highest-level cell of the terminal equipment on the frequency with the next highest priority detects whether the terminal equipment supports the target slice, and so on; until the terminal equipment selects the frequency which does not support slicing, the terminal equipment selects the highest-grade cell on the frequency according to the traditional cell reselection criterion, but the highest-grade cell at least needs to meet the signal threshold condition, such as S criterion and the like; if yes, the terminal equipment reselects to the cell; otherwise the terminal device continues to find a suitable cell on the lower priority frequencies that do not support slicing.

Then, according to the existing slice-specific cell reselection rule, when none of the highest-level cells on the frequency supporting slicing supports the target slice, the cell reselection failure of the terminal device may be caused, and the time for the terminal device to finally select and camp on the appropriate cell is increased.

In the technical scheme of the application, when the terminal equipment performs cell reselection according to the frequency priority list, if the highest-level cell in all the first frequencies supporting the target slice does not support the target slice, the terminal equipment selects the highest-level cell meeting the signal threshold value in at least one first frequency as the target cell and performs cell reselection to the target cell. The technical scheme of the application provides a selection scheme for cell reselection, namely, the highest-grade cell meeting the signal threshold is selected from the frequencies supporting slicing, and the cell reselection failure of the terminal equipment can be avoided by executing the traditional cell reselection on the frequencies, so that the time for the terminal equipment to finally select and camp on a proper cell is shortened, and the communication experience of a user is improved.

Referring to fig. 1, the method provided by the application comprises the following steps:

step 101: obtaining a frequency priority list, wherein the frequency priority list comprises at least one first frequency of support target slices arranged according to priority;

step 102: when the highest-level cell in all the first frequencies does not support the target slice, selecting the highest-level cell meeting the signal threshold value from the at least one first frequency as the target cell;

step 103: cell reselection to the target cell is performed.

The cell reselection method of the present application can be used at the terminal device side, i.e. the terminal device can execute the steps of the method.

It should be noted that the serial numbers of the steps in the present embodiment do not represent a limitation on the execution sequence of the steps.

It will be appreciated that in a specific implementation, the cell reselection method may be implemented in a software program, where the software program runs on a processor integrated within a chip or a chip module. The method may also be implemented by combining software with hardware, and the application is not limited.

The highest ranking cell satisfying the signal threshold in the embodiment of the present application refers to a highest ranking cell whose signal quality satisfies the signal threshold, and may specifically be a highest ranking cell whose reference signal received power (Reference Signal Receiving Power, RSRP) satisfies the signal threshold.

The signal threshold value in the embodiment of the application can be indicated by a network or can be preconfigured, for example, can be an S criterion, and the application is not limited to this.

In a specific implementation of step 101, the terminal configures the frequency priority list according to the setting rule of the frequency priority list. Specifically, the setting rule of the frequency priority list has the following cases:

a) A Non-access stratum (NAS) assigns priorities to each slice/group of slices, the frequency supporting a higher priority slice/group of slices having a higher slice frequency priority (slice based frequency priority) than the frequency supporting a lower priority slice/group of slices;

b) For frequencies supporting the same priority slices/slice groups, the terminal device should follow the slice specific frequency priority (slice specific frequency priority) received in the system information block (System Information Block, SIB) or radio resource control Release signaling (Radio Resource Control Release, RRC Release), if configured;

c) Of the frequencies supporting the same slice/slice group, the frequencies for which the slice reselection priorities (i.e., the slice frequency priorities and slice specific frequency priorities described above) are not configured should be considered as lower frequencies than the other configured slice reselection priorities;

d) Frequencies supporting slices/slice groups have higher priority of slice frequencies than frequencies not supporting any slices/slice groups;

e) For frequencies that do not support any tiles/tiles groups, the terminal device should follow the legacy frequency priorities received in SIB or RRC Release.

Table 1 shows a schematic diagram of the frequencies and frequency priorities in the frequency priority list, wherein frequencies F1, F2 and F3 are the first frequencies supporting slicing and frequencies F4 and F5 are the second frequencies not supporting slicing. Frequencies F1 and F2 support slice S1, frequency F3 supports slice S2, the priority of slice S1 is higher than the priority of slice S2, and the slice specific frequency priority of frequency F1 is higher than the slice specific frequency priority of frequency F2; the legacy frequency priority of frequency F5 is higher than the legacy frequency priority of frequency F4. Thus, F1, F2, F3, F5, and F4 are in order from high to low in priority. Note that, in the present embodiment, the lower the value of the frequency priority, the higher the frequency priority of the corresponding frequency, and the rule is applicable to slice-specific frequency priority and conventional frequency priority, but does not constitute a limitation of the interpretation of the frequency priority value of the present application.

TABLE 1

Frequency of	Slice-frequency priority	Legacy frequency priority
			F1	S1-3	6
F2	S1-6	5
			F3	S2-5	3
F4	--	2
			F5	--	1

In a specific embodiment, the frequency priority list may include only at least one first frequency supporting the target slice. As shown in table 2 in particular, the frequency priority list includes first frequencies F1, F2, and F3.

TABLE 2

In this case, the terminal device judges whether or not the highest-rank cells in the first frequency each support the target slice, one by one, according to the priority. Firstly, a terminal device judges whether a highest-level cell on a frequency F1 supports a slice S1; the terminal device finds that the highest ranked cell on frequency F1 does not support slice S1, then the terminal device finds the appropriate cell on the next highest priority frequency. The terminal device determines whether the highest-level cell on the frequency F2 supports the slice S1, and if the terminal device finds that the highest-level cell on the frequency F2 does not support the slice S1, the terminal device determines whether the highest-level cell on the frequency F3 supports the slice S2.

If the highest ranking cell on frequency F3 does not support slice S2, the terminal device performs steps 102 and 103 to select the highest ranking cell in frequencies F1, F2 and F3 that meets the signal threshold to perform cell reselection as the target cell.

In another embodiment, the frequency priority list includes at least one first frequency that includes supporting the target slice and at least one second frequency that does not support the slice. With continued reference to table 1, the frequency priority list includes first frequencies F1, F2, and F3, and second frequencies F4 and F5.

In this case, the terminal device judges whether or not the highest-rank cells in the first frequency each support the target slice, one by one, according to the priority. Firstly, a terminal device judges whether a highest-level cell on a frequency F1 supports a slice S1; the terminal device finds that the highest ranked cell on frequency F1 does not support slice S1, then the terminal device finds the appropriate cell on the next highest priority frequency. The terminal device determines whether the highest-level cell on the frequency F2 supports the slice S1, and if the terminal device finds that the highest-level cell on the frequency F2 does not support the slice S1, the terminal device determines whether the highest-level cell on the frequency F3 supports the slice S2.

If the highest ranking cell on frequency F3 does not support slice S2, the terminal device looks for a suitable cell on frequency F5. Since frequency F5 does not support slicing, it is determined whether the signal quality of the highest level cell in frequency F5 satisfies the signal threshold. And if the terminal equipment finds that the signal quality of the highest-level cell in the frequency F5 does not meet the signal threshold, judging whether the signal quality of the highest-level cell in the frequency F4 meets the signal threshold.

If the signal quality of the highest ranking cell in frequency F4 does not meet the signal threshold, the terminal device performs steps 102 and 103 to select the highest ranking cell in frequencies F1, F2 and F3 that meets the signal threshold to perform cell reselection as the target cell.

In a specific embodiment of step 102, the terminal device selects the highest ranking cell satisfying the signal threshold among the at least one first frequency according to a frequency priority selected from one of a slice-specific frequency priority and a legacy frequency priority. Since the first frequency has a slice-specific frequency priority, and may also have a conventional frequency priority, the target cell may be selected according to one of the two priorities. Please refer to the following cases 1 and 2.

Further, slice specific frequency priorities are recorded in a frequency priority list, or from system messages and or RRC release signaling (which may also be referred to as RRC release messages), from which conventional frequency priorities are derived.

Further, the terminal device may update the frequency priority list during the cell reselection, and when selecting the target cell according to the slice specific frequency priority, it may reacquire the slice specific frequency priority of the first frequency from the recently updated frequency priority list. The most recently updated frequency priority list in this embodiment refers to a priority list with the update time closest to the current time, that is, a priority list updated last time or last time.

In case 1, the terminal device selects the highest-level cell meeting the signal threshold value from at least one first frequency according to the priority of the slice specific frequency.

Specifically, the terminal device ranks at least one first frequency according to the priority of the slice specific frequencies, and the ranked at least one first frequency has a first order. With continued reference to either table 1 or table 2, the first frequencies F1, F2, and F3 are ordered by slice specific frequency priority, with the first order being F1, F2, and F3. The terminal equipment judges whether the highest-level cells in each first frequency meet the signal threshold value one by one according to a first sequence. The terminal equipment firstly searches a proper cell on the frequency F1 and judges whether the signal quality of the highest-level cell on the frequency F1 meets a signal threshold. If the signal quality of the highest ranked cell on frequency F1 meets the signal threshold, the terminal device reselects to the highest ranked cell on frequency F1.

Otherwise, if the signal quality of the highest-level cell on the frequency F1 does not meet the signal threshold, the terminal device continues to determine whether the signal quality of the highest-level cell on the frequency F2 meets the signal threshold, and so on.

And 2, selecting the highest-level cell meeting the signal threshold value from at least one first frequency by the terminal equipment according to the conventional frequency priority.

Specifically, the terminal device ranks at least one first frequency according to the conventional frequency priority, and the ranked at least one first frequency has a second order. With continued reference to either table 1 or table 2, the first frequencies F1, F2, and F3 are ordered by slice specific frequency priority, and the second order is F3, F2, and F1. And the terminal equipment judges whether the highest-level cells in each first frequency meet the signal threshold value one by one according to a second sequence. The terminal equipment firstly searches a proper cell on the frequency F3 and judges whether the signal quality of the highest-level cell on the frequency F3 meets a signal threshold. If the signal quality of the highest ranked cell on frequency F3 meets the signal threshold, the terminal device reselects to the highest ranked cell on frequency F3.

Otherwise, if the signal quality of the highest-level cell on the frequency F3 does not meet the signal threshold, the terminal device continues to determine whether the signal quality of the highest-level cell on the frequency F2 meets the signal threshold, and so on.

In another embodiment of step 102, the terminal device may also select the highest ranking cell in the at least one first frequency that meets the signal threshold according to the number of supported slices.

In this embodiment, the terminal device ranks at least one first frequency according to the number of supported slices, where the ranked at least one first frequency has a third order. The greater the number of slices supported, the earlier the ordering of the first frequency in the third order. Alternatively, the lower the number of supported slices, the earlier the ordering of the first frequency in the third order. And the terminal equipment judges whether the highest-level cells in each first frequency meet the signal threshold value one by one according to a third sequence, and selects the cells meeting the signal threshold value as target cells.

In a further embodiment of step 102, the terminal device may also select the highest ranking cell in the at least one first frequency that meets the signal threshold according to the priority of the supported slices.

In this embodiment, the terminal device ranks at least one first frequency according to the priority of the slice supported by the frequencies, where the ranked at least one first frequency has a third order. The higher the priority of the supported slices, the earlier the ordering of the first frequency in the third order. And the terminal equipment judges whether the highest-level cells in each first frequency meet the signal threshold value one by one according to a third sequence, and selects the cells meeting the signal threshold value as target cells.

It will be appreciated that the terminal device may also order at least one first frequency according to other preset conditions, and sequentially select the highest ranking cell that meets the signal threshold.

In one non-limiting embodiment, a portion of the first frequencies may not have a legacy frequency priority, in which case the first frequencies may be assigned a legacy frequency priority to participate in the ranking.

TABLE 3 Table 3

Frequency of	Slice-frequency priority	Legacy frequency priority
			F1	S1-3	6
F2	S1-6	5
			F3	S2-5	--
F4	--	2
			F5	--	1

Referring to table 3, the frequency F3 does not have the conventional frequency priority. The terminal device may set the legacy frequency priority of the frequency F3 to the lowest legacy frequency priority or lower the legacy frequency priority thereof than the legacy frequency priorities of the frequencies F1 and F2.

In this case, after the first frequencies F1, F2, and F3 are ordered according to the conventional frequency priority, the second order is F2, F1, and F3. And the terminal equipment judges whether the highest-level cells in each first frequency meet the signal threshold value one by one according to a second sequence. The terminal equipment firstly searches a proper cell on the frequency F2 and judges whether the signal quality of the highest-level cell on the frequency F2 meets a signal threshold. If the signal quality of the highest ranked cell on frequency F2 meets the signal threshold, the terminal device reselects to the highest ranked cell on frequency F2. Otherwise, if the signal quality of the highest-level cell on the frequency F2 does not meet the signal threshold, the terminal device continues to determine whether the signal quality of the highest-level cell on the frequency F1 meets the signal threshold, and so on.

Referring to fig. 2, fig. 2 illustrates an exemplary interaction flow between a network device and a terminal device.

Step 201, the serving cell broadcasts a system message to the terminal device and/or sends RRC release signaling. The system message and/or RRC release signaling includes a slice specific frequency priority and/or a legacy frequency priority of the first frequency.

Step 202, the terminal equipment acquires a frequency priority list.

Step 203, the terminal device selects the highest-level cell meeting the signal threshold in the first frequency. Wherein the frequency F1 has the highest priority and the highest ranking cell on F1 meets the signal threshold, then in step 204 the terminal device performs a cell reselection to candidate cell 1.

For more specific implementation manners of the embodiments of the present application, please refer to the foregoing embodiments, and the details are not repeated here.

Referring to fig. 3, fig. 3 illustrates a cell reselection apparatus 30, where the cell reselection apparatus 30 may include:

an obtaining module 301, configured to obtain a frequency priority list, where the frequency priority list includes at least one first frequency of support target slices arranged by priority;

a target cell selection module 302, configured to select, as a target cell, a highest-rank cell satisfying a signal threshold in at least one first frequency when the highest-rank cell does not support a target slice in at least all the first frequencies;

and a reselection module 303, configured to perform cell reselection to the target cell.

In a specific implementation, the cell reselection device 30 may correspond to a Chip with a function of determining a power control parameter in a terminal device, for example, a System-On-a-Chip (SOC), a baseband Chip, etc.; or the terminal equipment comprises a chip module with a power control parameter determining function; or corresponds to a chip module having a chip with a data processing function or corresponds to a terminal device.

With respect to each of the apparatuses and each of the modules/units included in the products described in the above embodiments, it may be a software module/unit, a hardware module/unit, or a software module/unit, and a hardware module/unit. For example, for each device or product applied to or integrated on a chip, each module/unit included in the device or product may be implemented in hardware such as a circuit, or at least part of the modules/units may be implemented in software program, where the software program runs on a processor integrated inside the chip, and the rest (if any) of the modules/units may be implemented in hardware such as a circuit; for each device and product applied to or integrated in the chip module, each module/unit contained in the device and product can be realized in a hardware manner such as a circuit, different modules/units can be located in the same component (such as a chip, a circuit module and the like) or different components of the chip module, or at least part of the modules/units can be realized in a software program, the software program runs on a processor integrated in the chip module, and the rest (if any) of the modules/units can be realized in a hardware manner such as a circuit; for each device, product, or application to or integrated with the terminal device, each module/unit included in the device may be implemented in hardware such as a circuit, and different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components in the terminal device, or at least some modules/units may be implemented in a software program, where the software program runs on a processor integrated within the terminal device, and the remaining (if any) part of the modules/units may be implemented in hardware such as a circuit.

The embodiment of the application also discloses a storage medium which is a computer readable storage medium and is stored with a computer program, and the computer program can be used for executing the steps of the method. The storage medium may include Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic or optical disks, and the like. The storage medium may also include non-volatile memory (non-volatile) or non-transitory memory (non-transitory) or the like.

Referring to fig. 4, the embodiment of the application further provides a hardware structure schematic diagram of the communication device. The apparatus comprises a processor 401, a memory 402 and a transceiver 403.

The processor 401 may be a general purpose central processing unit (central processing unit, CPU), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present application. Processor 401 may also include multiple CPUs and processor 601 may be a single-Core (CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, or processing cores for processing data (e.g., computer program instructions).

The memory 402 may be a ROM or other type of static storage device, a RAM or other type of dynamic storage device that can store static information and instructions, or that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disk read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, as embodiments of the application are not limited in this regard. The memory 402 may exist alone (in this case, the memory 402 may be located outside the apparatus or inside the apparatus) or may be integrated with the processor 401. Wherein the memory 402 may contain computer program code. The processor 401 is arranged to execute computer program code stored in the memory 402 for implementing the method provided by the embodiment of the application.

The processor 401, the memory 402 and the transceiver 403 are connected by a bus. The transceiver 403 is used to communicate with other devices or communication networks. Alternatively, the transceiver 403 may include a transmitter and a receiver. The means for implementing the receiving function in the transceiver 403 may be regarded as a receiver for performing the steps of receiving in an embodiment of the application. The means for implementing the transmitting function in the transceiver 403 may be regarded as a transmitter for performing the steps of transmitting in the embodiments of the present application.

While the schematic structural diagram shown in fig. 4 is used to illustrate the structure of the terminal device according to the above embodiment, the processor 401 is used to control and manage the actions of the terminal device, for example, the processor 401 is used to support the terminal device to perform the steps 101, 102 and 103 in fig. 1, or the steps 202, 203 and 204 in fig. 2, and/or the actions performed by the terminal device in other processes described in the embodiments of the present application. The processor 401 may communicate with other network entities, e.g., with the network devices described above, via the transceiver 403. The memory 402 is used for storing program codes and data of the terminal device.

While the schematic structural diagram shown in fig. 4 is used to illustrate the structure of the network device according to the above embodiment, the processor 401 is configured to control and manage the actions of the network device, for example, the processor 401 is configured to support the network device to perform the steps 201 and 204 in fig. 2, and/or the actions performed by the network device in other processes described in the embodiments of the present application. The processor 401 may communicate with other network entities, e.g. with the above-mentioned terminal devices, via the transceiver 403. Memory 402 is used to store program codes and data for the network device. The processor, when running the computer program, may control the transceiver 403 to send one or more of RRC signaling, MAC signaling, and DCI.

The embodiment of the application defines a unidirectional communication link from an access network to terminal equipment as a downlink, wherein data transmitted on the downlink is downlink data, and the transmission direction of the downlink data is called as a downlink direction; and the unidirectional communication link from the terminal equipment to the access network is an uplink, the data transmitted on the uplink is uplink data, and the transmission direction of the uplink data is called as uplink direction.

It should be understood that the term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In this context, the character "/" indicates that the front and rear associated objects are an "or" relationship.

The term "plurality" as used in the embodiments of the present application means two or more.

The first, second, etc. descriptions in the embodiments of the present application are only used for illustrating and distinguishing the description objects, and no order is used, nor is the number of the devices in the embodiments of the present application limited, and no limitation on the embodiments of the present application should be construed.

The "connection" in the embodiment of the present application refers to various connection manners such as direct connection or indirect connection, so as to implement communication between devices, which is not limited in the embodiment of the present application.

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center by wired or wireless means.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

In the several embodiments provided in the present application, it should be understood that the disclosed method, apparatus and system may be implemented in other manners. For example, the device embodiments described above are merely illustrative; for example, the division of the units is only one logic function division, and other division modes can be adopted in actual implementation; for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may be physically included separately, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in hardware plus software functional units.

The integrated units implemented in the form of software functional units described above may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium, and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform part of the steps of the method according to the embodiments of the present application.

Although the present application is disclosed above, the present application is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the application, and the scope of the application should be assessed accordingly to that of the appended claims.

Claims (12)

1. A method of cell reselection, comprising:

obtaining a frequency priority list, wherein the frequency priority list comprises at least one first frequency of support target slices arranged according to priority;

when the highest-level cell in all the first frequencies does not support the target slice, selecting the highest-level cell meeting the signal threshold value from the at least one first frequency as the target cell;

cell reselection to the target cell is performed.

2. The method of cell reselection of claim 1, wherein the frequency priority list further comprises at least one second frequency that does not support slicing, wherein selecting a highest ranking cell among the at least one first frequency that meets a signal threshold comprises:

and selecting the highest-level cell meeting the signal threshold value from the at least one first frequency when the highest-level cell does not support the target slice in all the first frequencies and the highest-level cell in all the second frequencies does not meet the signal threshold value.

3. The method of cell reselection according to claim 1, wherein selecting the highest ranking cell among the at least one first frequency that meets a signal threshold comprises:

selecting a highest ranking cell satisfying a signal threshold among the at least one first frequency according to a frequency priority selected from one of a slice-specific frequency priority and a legacy frequency priority.

4. A cell reselection method according to claim 3, characterized in that the slice specific frequency priority is recorded in the frequency priority list, the legacy frequency priority being from a system message or signaling to release RRC.

5. The cell reselection method of claim 1, wherein the at least one first frequency has a slice-specific frequency priority, and wherein selecting a highest ranking cell among the at least one first frequency that meets a signal threshold comprises:

sorting the at least one first frequency according to the slice specific frequency priority, wherein the sorted at least one first frequency has a first order;

judging whether the highest-level cells in each first frequency meet the signal threshold value or not one by one according to a first sequence, and selecting the cells meeting the signal threshold value as the target cells.

6. The method of cell reselection according to claim 1, wherein the at least one first frequency has a legacy frequency priority, and wherein selecting the highest ranking cell among the at least one first frequency that meets a signal threshold comprises:

sorting the at least one first frequency according to a conventional frequency priority, the sorted at least one first frequency having a second order;

judging whether the highest-level cells in each first frequency meet the signal threshold value or not one by one according to a second sequence, and selecting the cells meeting the signal threshold value as the target cells.

7. The cell reselection method of claim 6, wherein the ordering the at least one first frequency by legacy frequency priority comprises:

for a first frequency without traditional frequency priority, assigning the first frequency without traditional frequency priority with the lowest traditional frequency priority;

the at least one first frequency is ordered in a conventional frequency priority order from high to low.

8. The cell reselection method of claim 6, wherein the ordering the at least one first frequency by legacy frequency priority comprises:

assigning a legacy frequency priority to a first frequency that does not have a legacy frequency priority, the assigned legacy frequency priority being lower than legacy frequency priorities of other first frequencies;

the at least one first frequency is ordered in a conventional frequency priority order from high to low.

9. The method of cell reselection according to claim 1, wherein selecting the highest ranking cell among the at least one first frequency that meets a signal threshold comprises:

sorting the at least one first frequency according to the number of supported slices or the priority of the supported slices, wherein the sorted at least one first frequency has a third order;

and judging whether the highest-level cells in each first frequency meet the signal threshold value one by one according to a third sequence, and selecting the cells meeting the signal threshold value as the target cells.

10. A cell reselection apparatus, comprising:

an acquisition module for acquiring a frequency priority list comprising at least one first frequency of support target slices arranged by priority;

the target cell selection module is used for selecting the highest-level cell meeting the signal threshold value from at least one first frequency as a target cell at least when the highest-level cell does not support the target slice in all the first frequencies;

and the reselection module is used for performing cell reselection to the target cell.

11. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, performs the steps of the cell reselection method of any one of claims 1 to 9.

12. A terminal device comprising a memory and a processor, the memory having stored thereon a computer program executable on the processor, characterized in that the processor, when executing the computer program, performs the steps of the cell reselection method of any one of claims 1 to 9.